<template>
  <div class="app-container">
    课程列表

    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="courseQuery.title" placeholder="课程名称" />
      </el-form-item>

      <el-form-item>
        <el-select
          v-model="courseQuery.status"
          clearable
          placeholder="课程状态"
        >
          <el-option value="Normal" label="已发布" />
          <el-option value="Draft" label="未发布" />
        </el-select>
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getList()"
        >查询</el-button
      >
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table :data="list" border fit highlight-current-row>
      <el-table-column label="序号" width="70" align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="title" label="课程名称" width="250" />

      <el-table-column prop="lessonNum" label="课时数" width="80" />

      <el-table-column prop="price" label="价格" width="80" />

      <el-table-column prop="gmtCreate" label="添加时间" width="160" />

      <el-table-column prop="viewCount" label="浏览数量" width="80" />

      <el-table-column label="课程状态" width="80">
        <template slot-scope="scope">
          {{ scope.row.status === "Normal" ? "已发布" : "未发布" }}
        </template>
      </el-table-column>

      <el-table-column label="操作" width="500" align="center">
        <template slot-scope="scope">
          <router-link :to="'/edu/course/info/' + scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit"
              >编辑基本信息</el-button
            >
          </router-link>
          <router-link :to="'/edu/course/chapter/' + scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit"
              >编辑大纲</el-button
            >
          </router-link>
          <el-button
            type="danger"
            size="mini"
            icon="el-icon-delete"
            @click="removeDataById(scope.row.id)"
            >删除课程</el-button
          >
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center"
      layout="total, prev, pager, next, jumper"
      @current-change="getList"
    />
  </div>
</template>
<script>
//引入调用teacher.js文件
import course from '@/api/edu/course'

export default {
    //写核心代码位置
    // data:{
    // },
    data() { //定义变量和初始值
        return {
          list:null,//查询之后接口返回集合
          page:1,//当前页
          limit:10,//每页记录数
          total:0,//总记录数
          courseQuery:{} //条件封装对象
        }
    },
    created() { //页面渲染之前执行，一般调用methods定义的方法
        //调用
        this.getList() 
    },
    methods:{  //创建具体的方法，调用teacher.js定义的方法
        //讲师列表的方法
        getList() {
            course.getListCourse()
                .then(response =>{//请求成功
                    //response接口返回的数据
                    this.list = response.data.list
                }) 
        },
        resetData() {//清空的方法
            //表单输入项数据清空
            this.courseQuery = {}
            //查询所有讲师数据
            this.getList()
        },
        //删除课程的方法
        removeDataById(courseid) {
          this.$confirm("此操作将永久删除课程, 是否继续?", "提示", {
            confirmButtonText: "确定",
            cancelButtonText: "取消",
            type: "warning",
         }).then(() => {

            console.log("删除课程的方法")

            //点击确定，执行then方法
            //调用删除的方法
            course.deleteCourseId(courseid).then((response) => {
            //删除成功
            //提示信息
            this.$message({
            type: "success",
            message: "删除成功!",
          });
          //回到列表页面
          this.getList();
        });
      }); //点击取消，执行catch方法
    },
 
    }
}
</script>
